🚀 go-pugleaf

        I remember that article too.
        I was in high school at the time and we tried it in our electronics
   class.  Our flame was barely adequate, four to six inch high (I think a
   minimum of six inches was recommended). The sound was pretty distorted
   but we didn't concern ourselves with impendance and flame size was too
   small. We just used a common propane torch.
        As I recall, the article mentioned (or suggested) connecting
   ones HiFi to a central heating furnace. Maybe a nice idea unless you want
   sterio :-)
        Hmmm, if NASA hears of this, I wonder if they'll start playing
   the National Anthem during shuttle launches ?        :-)